@misc{indiciaeb78e98a96deb,
  title = {Wind assistance: A requirement for migration of shorebirds?},
  author = {Robert W. Butler and Tony D. Williams and Nils Warnock and Mary Anne Bishop},
  year = {1997},
  doi = {10.2307/4089246},
  url = {https://pubs.usgs.gov/publication/70019770},
  note = {Source identifier: 70019770}
}